BerryPolter No you can't for multiplayer, skirmishes, and campaigns. You can however if you are doing a tournament; you can then make a deck out of various randomized cards that are given to you for that tournament. Coins are separate for this rule and can be put into any hero's deck of any faction.
XionUnborn01, I agree with you entirely, but I think the problem is arising with people downvoting because they see a certain username, not from disagreeing with the comment.
I think it would be neat if you could use multiple heroes at a time if you wanted to. Would add an extra strategical element to the game. Otherwise, this game is amazing!
 "War of Omens"){kind=icon}
 "Kingdom Rush Frontiers"){kind=icon}